CPS DPA03-800V User manual

Installation and Operation Manual

for CPS DPA03-800V/US AC Combiner

CHINT POWER SYSTEMS AMERICA CO., LTD.

Rev 3.2 Jan 12, 2023 Doc. No.: 9.0020.0589C0

Table of Contents   
2  /  36 
Table of Contents 
0 Preface ............................................................................................ 4 
1 Safety .............................................................................................. 5 
 Symbols and meanings in this document ................................................... 5 
 Markings and meanings on the device ....................................................... 5 
 Safety precautions of operating the Combiner ........................................... 6 
2 General Introduction...................................................................... 7 
 Overview of grid-tied PV system ................................................................ 7 
 Appearance and dimensions ...................................................................... 7 
 Features of AC Combiner ........................................................................... 8 
 Nameplate .................................................................................................. 9 
2.4.1 Model No. .......................................................................................... 9 
2.4.2 Serial No. ......................................................................................... 10 
 Circuit structure design ............................................................................. 11 
 Storage requirements ............................................................................... 12 
3 Mechanical Installation ............................................................... 13 
 Unpacking for inspection .......................................................................... 13 
 Installation requirements .......................................................................... 14 
3.2.1 Environment requirements ............................................................... 14 
3.2.2 Installation requirements .................................................................. 14 
 Installation procedures ............................................................................. 14 
3.3.1 Installation with CPS Cluster Mount ................................................. 14 
3.3.2 Installation with CPS In-line Cluster Mount ...................................... 19 
3.3.3 Installation on other structures ......................................................... 22 
 Open and close the door .......................................................................... 23 
3.4.1 Open the door .................................................................................. 24 
3.4.2 Close the door ................................................................................. 24 
4 Electrical Connection .................................................................. 26 
 Internal wiring terminals and cable specification ...................................... 26 
 Recommended tools and torque values ................................................... 27 
 Wiring ....................................................................................................... 28 
4.3.1 Cable connection ............................................................................. 28 
4.3.2 Create conduit entry holes ............................................................... 29 
5 Operation and Maintenance ........................................................ 30 
 Start up and shut down ............................................................................ 30 

 Table of Contents 
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5.1.1 Start up ............................................................................................ 30 
5.1.2 Shut down ........................................................................................ 30 
 Maintenance ............................................................................................. 31 
5.2.1 Regular inspection ........................................................................... 31 
5.2.2 Fuse replacement ............................................................................ 31 
6 Technical Data .............................................................................. 32 
7 Limited Warranty .......................................................................... 33 
8 Contact Information ..................................................................... 34 
9 Appendix ....................................................................................... 35 
 Appendix A: Figure list .............................................................................. 35 
 Appendix B: Table list ............................................................................... 35 

Preface

4 / 36

0 Preface

Thank you for choosing CPS DPA03-800V/US Series AC Combiner (hereinafter

referred to as "Combiner") developed by CHINT POWER SYSTEMS AMERICA CO.,

LTD (hereinafter referred to as "CPS").

This Combiner is one highly reliable device, which is widely applicable in AC

combining of various PV systems.

IMPORTANT!

Please read this manual carefully and make sure that you have

understood all the contents thoroughly before you start any operation.

Main Contents

Safety precautions, device overview, installation, operation and maintenance,

technical data as well as quality assurance are mainly introduced in this manual.

Target Reader

This manual is applicable to the work staff of wiring, installation, operation and

maintenance of the Combiner.

Manual Management

Please store this manual together with related documents of other device

components and keep it readily accessible at all times for quick reference and easy

use.

Copyrights

CPS reserves all rights in this manual. Any reproduction, disclosure or copy in whole

or in part is forbidden without prior written authorization. CPS doesn’t accept any

responsibilities whatsoever for potential errors or possible lack of information in this

document.

Version

This manual is subject to technical change or contents modification without prior

notice. The version applicable to the purchased device shall prevail. Users can get

the latest manual from our sales channel or our official website:

www.chintpowersystems.com/

Safety

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1 Safety

Please read this user manual carefully before the installation and operation of this

Combiner. CPS reserves the right to refuse warranty claims for equipment damages

if users fail to install the equipment according to the instructions in this manual.

Symbols and meanings in this document

Markings and meanings on the device

Symbol

Meanings

HIGH VOLTAGE!

Danger to life due to high voltage!

All work on the device must only be performed by qualified personal

as described in this document.

HOT!

The equipment is designed according to international safety

standards, but surfaces can become hot during operation. DO NOT

touch the peripheral surfaces during or shortly after operation.

EARTH GROUND!

This symbol marks the location of grounding terminal, which must be

securely connected to the earth through the protective earth (PE)

cable to ensure operational safety.

Symbol

Meanings

DANGER!

DANGER indicates a hazardous situation with high level of risk which, if

not avoided, will result in death or serious injury.

WARNING!

WARNING indicates a hazardous situation with medium level of risk

which, if not avoided, could result in death or serious injury.

CAUTION!

CAUTION indicates a hazardous situation with low level of risk which, if

not avoided, could result in minor or moderate injury.

NOTICE!

NOTICE indicates a hazardous situation which, if not avoided, could

result in equipment working abnormally or property loss.

IMPORTANT!

IMPORTANT indicates important supplementary information or provides

skills or tips that can be used to help you solve a problem or save you

time.

Safety

6 / 36

RoHS SYMBOL

In accordance with 2011/65/EU regulations, the inverter imposes

restrictions on the use of specific hazardous substances in electrical

and electronic equipment.

TUV Certification

This inverter has passed testing and received certification from the

organization TUV Rheinland.

Safety precautions of operating the Combiner

Symbol

Meanings

DANGER!

 Touching the wiring terminals inside the device may result in death

by electric shock.

 DO NOT touch the terminals or conductors connected with PV

modules or PV inverters, which may result in death by electric shock.

WARNING!

 All the installation and wiring connections should be performed only

by qualified technical personnel.

 Make sure both the AC and DC sources are disconnected, and the

shell of device is securely grounded to avoid electric shock during

maintenance or installation.

 DO NOT touch live or exposed parts of the input and output sides to

avoid electric shock when checking or maintaining the device.

CAUTION!

 Handle the Combiner carefully to prevent it from falling.

 Check the device and make sure there is no problem with the

installation before putting it into operation!

 Connect the wires labeled L1/L2/L3/PE of the device to avoid short

circuit hazard and to ensure personal safety and the normal

operation of the device.

 Although the Combiner is certified to international safety standards,

it will become hot during operation. DO NOT touch the hot parts of

the device during operation.

NOTICE!

 Follow all the wiring and safety instructions of the Combiner.

 All the wiring and operation must conform to the related local

standard requirements of the device.

IMPORTANT!

 The device nameplate contains important information of the device,

such as model, serial number and detailed parameters.

 If there is any problem or malfunction of the device during operation,

please contact our after-sales center and provide the serial number.

Our service personnel will provide timely service for you.

 Please keep the nameplate intact.

General Introduction

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2 General Introduction

Overview of grid-tied PV system

The grid-tied PV system is generally made up of PV modules, PV string inverters, AC

Combiners, and other electrical balance of system components. Solar irradiation is

converted to DC electricity by PV modules, then distributed to each PV string inverter

as the first level of current combination. Then, PV string inverter outputs are

connected to the AC Combiner for second level of current combination. The AC power

then has the same frequency and phase with the grid. This power can supply onsite

loads or be injected into the local grid.

This AC Combiner shall be used in combination with CPS SCH275KTL-DO/US-800

series string PV inverters.

For the position and function of the AC Combiner in the grid-tied PV system, refer to

Figure 2-1.

Figure 2-1 Grid-tied PV system

Appearance and dimensions

General Introduction

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Figure 2-2 Product Dimensions

Figure 2-3 Product Appearance

Item No.

Component Name

1

Hasp locks (refer to Open the door)

2

Operation handle

3

Hooks

Table 2-1 Component Name

Features of AC Combiner

- High performance, reliable design.

- High-voltage switch equipped with TYPE3R outdoor operation handle,

which is designed specifically for a PV system.

- Door cannot be opened once the machine is powered ON.

- A transparent protection board is installed in front of the live components

to avoid access to live conductors.

- Powerful protection performance.

- Equipped with high-current load-break switch and high-voltage AC fuse.

- Available space to place a padlock on the disconnect switch handle for

lockout/tagout purposes.

- Convenient installation and maintenance.

- Installs easily on mounting bracket.

- No locking screws are required.

General Introduction

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Nameplate

The device nameplate contains important information of the device, including model

number, serial number and detailed parameters, etc.

You can find the nameplate of Combiner on the right side of its enclosure, as shown

in Figure 2-4.

Figure 2-4 Nameplate

2.4.1 Model No.

You can find out the model number of the Combiner on the nameplate, as shown in

figure 2-4. Each character included in the model has its special meanings, as shown

in Figure 2-5.

Figure 2-5 Naming convention of the model

General Introduction

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2.4.2 Serial No.

The serial number can be found out at the bottom left corner in the inner side of the

door, as shown in Figure 2-6 (for reference).

Figure 2-6 Serial No.

The serial number is a list of 11 numbers and each number has its special meanings,

the bar code is made up of 128 codes, as shown below (just for reference).

Figure 2-7 Naming convention of the serial no.

IMPORTANT!

If there is any problem or malfunction of the device during operation

in the future, you can contact our after-sales service center and

provide the device serial number.

Please keep the nameplate intact, as our service personnel will

request the product information to determine the date of production

and other necessary information to help service the unit.

General Introduction

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Circuit structure design

The main electrical schematic diagram of the AC Combiner is shown in Figure 2-8.

The AC power from the PV inverters is fed to the AC fuses of the Combiner and then

output through the disconnect switch. The disconnect switch can meet the input

requirements of the 800VAC power.

Note: PE=Protective earthing

Figure 2-8 Basic Electrical Schematic Diagram of the AC Combiner

General Introduction

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Storage requirements

• Close the door tightly, to minimize the risk of accidental opening.

• Storage space shall be clean and dried and be free from dust or

moisture.

• The temperature of the storage space shall be kept between -40℃

and +70℃ as shown below.

• The relative humidity of the storage space shall be kept between 5%

and 95% as shown below.

Figure 2-9 Temperature and Relative Humidity of the Storage Space

Mechanical Installation

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3 Mechanical Installation

Unpacking for inspection

Before installing, check the product for any obvious damage and confirm that each of

the items in the delivery list shown below are present. Contact your supplier

immediately if any problem is found. The delivery list of the Combiner is as below:

No.

Images

Accessories

QTY (pcs)

1

AC Combiner

1

2

M12*50 screw, Bolt grade 8.8

Min. breaking torque (80 N.m)

42

3

M12 nut

46

4

M12 flat washer

92

5

M12 spring washer

46

6

M4*12 comb. screw, bolt grade 8.8,

Min. breaking torque (2.6 N.m)

6

7

Fixed bracket

2

8

Mounting bracket

2

9

M12*40 screw, bolt grade 8.8,

Min. breaking torque (80 N.m)

4

10

One manual and one warranty card

2

Table 3-1 Delivery List

Mechanical Installation

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Installation requirements

3.2.1 Environment requirements

• Inflammable and explosive materials inside and around the inverter are

strictly prohibited.

• Good ventilation around the equipment shall be kept.

• The temperature shall be kept within -30°C ~ +60°C. For environments

with temperatures that may exceed 55°C, please choose installation

sites with shelters or build sunshades as needed.

• It is not recommended to expose the device to heavy rain. Water that

is sufficiently deep may enter the device through the cable entry holes

in the bottom of the Combiner.

3.2.2 Installation requirements

• Make sure the device is not electrically connected and energized

before installing.

• Never install, use or maintain the device in lightning, rain, snow, wind

and other severe weather.

• Do not wear conductive objects such as watches, bracelets, rings, and

necklaces when installing, operating, or maintaining the device.

• After installing devices, remove empty packing materials such as

cartons, foams, plastics, and cable ties.

• The paint scratches on the cabinet body caused in the process of

transportation and installation must be repaired in time. It is strictly

prohibited to expose the scratched parts to the outdoor environment

for long periods of time.

Installation procedures

WARNING!

All the installation and wiring connections should be performed only by

qualified technical personnel.

CAUTION!

Heavy device, handle it carefully to prevent it from tipping or falling.

3.3.1 Installation with CPS Cluster Mount

IMPORTANT!

All the accessories needed to install the combiner are provided with the

combiner (but may ship separately).

Mechanical Installation

15 / 36

Install the AC Combiner mounting bracket pieces as shown below:

1. Take out the mounting brackets from the AC Combiner accessory bag. Fix

the two mounting brackets (1) with four M12X40 bolt combinations onto the

two vertical beams (2), tighten all these bolts with four M12 nuts, torque

value: 49±5 N.m (434±43 in-lbs).

Figure 3-1 Fix Mounting Brackets onto the Vertical Beams

2. Take out the fixed brackets from the AC Combiner accessory kit. Position

one fixed bracket (2) onto the fixed hole on the outer edge of the mounting

bracket (3) and fasten it with one M4*12 securing screw (1) via screwdriver

as shown, torque value: 1.5N.m (14 in-lbs).

Figure 3-2 Position of Fixed Bracket

Mechanical Installation

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3. Hoist the bottom of the Combiner till all its hooks (4) are aligned with the

mounting bracket (3) and hang them onto the mounting brackets of the rack.

4. This can be achieved by hoisting the Combiner with a hydraulic vehicle or

forklift in accordance with the following method:

(1) Find the center of gravity of the Combiner as shown below.

Figure 3-3 Center of Gravity of the Combiner

(2) Keep the center of gravity in the central position of the forklift to avoid

the Combiner tilting. Strap combiner as appropriate to ensure secure

lift and installation.

Figure 3-4 Hoist the Combiner with a Forklift

NOTICE

Never fasten the fixed bracket to drain holes in the center of the U-type

groove. Otherwise, it cannot be fastened onto the hooks of the Combiner

in step 5.

Mechanical Installation

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WARNING!

 All the hoisting operations should be performed only by qualified

technical personnel to guarantee the Combiner will not tilt or fall.

 Operate the hydraulic vehicle or forklift on level ground to prevent the

vehicle and the Combiner tilting.

 The center of gravity of the Combiner shall be kept in the central

position of the hoisting fork.

 During all the hoisting operations, the hoisting fork shall be kept

horizontal to avoid the Combiner tilting or falling.

(3) Slide the side plate of Combiner along the mounting bracket, until it

stays closely with the fixed bracket.

Figure 3-5 Slide the Combiner

(4) Fasten the fixed bracket onto the hooks of the Combiner by screwing

another two M4*12 securing screws into the holes of the fixed bracket,

torque value 1.5N.m (14 in-lbs). Fasten the fixed bracket onto the

hooks of the Combiner by screwing another two M4*12 securing

screws into the holes of the fixed bracket.

NOTICE!

 The weight of the device is about 120 kg. For safety purpose, please

hoist it with forklift or hydraulic vehicle as far as possible.

 The handrails on both sides of the device are designed for manual

lifting when lifting equipment is not available.

Mechanical Installation

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Figure 3-6 Fasten the Fixed Bracket

5. Finally, fasten another fixed bracket onto the other side of the mounting

bracket with the remaining three M4*12 securing screws to avoid the

accidental movement of the Combiner (refer to the step 2 and step 5).

IMPORTANT!

For the assembly instructions and assembly procedures of the integrated

bracket, please download the specific manual for the CPS Cluster Mount

from our official website.

Mechanical Installation

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3.3.2 Installation with CPS In-line Cluster Mount

IMPORTANT!

All the accessories needed to install the combiner are provided with the

combiner (but may ship separately).

Install the AC Combiner on the Cluster as shown below:

1. Take out mounting brackets from the AC combiner accessory bag. Fix the

two mounting brackets (1) with four M12X40 bolt combinations onto one

group of equipment suspension beams (2). Tighten all these bolts with four

M12 nuts, torque value: 52.0 N.m, 458.0 in-lbs.

Figure 3-7 Fix the Two Mounting Brackets onto the Two Vertical Beams

2. Take out fixed brackets from the AC combiner accessory bag. Position one

fixed bracket (2) onto one side of the mounting bracket (3) and fasten it with

one M4*12 securing screw (1) via screwdriver as shown, torque value:

1.6N.m, 14.1 in-lbs.

Figure 3-8 Position one fixed bracket

Mechanical Installation

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3. Hoist the bottom of the Combiner until all its hooks (1) are aligned with the

mounting bracket (2) and hang them onto the mounting brackets of the rack.

It can be achieved by hoisting the Combiner with a hydraulic vehicle or

forklift in accordance with the following method:

(1) Find the center of gravity of the Combiner as shown below.

Figure 3-9 Center of Gravity of the Combiner

(2) Keep the center of gravity in the central position of the hoisting fork to

avoid the Combiner tilting.

Figure 3-10 Hoist the Combiner with Hoisting Forklift

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CPS DPA03-800V User manual

CPS DPA03-800V User manual

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